Reuse / Recycling

West Yost utilized the hydraulic model to optimize use of recycled water and provided the City flexibility in the operation of the system for future demands. The resulting work allows operational decisions to be made to reduce wastewater discharges.

West Yost led the City and associated stakeholders through an evaluation and cost analysis of a potential recycled water program for the City. This evaluation provided the City with information to make an informed decision on whether to proceed with the Recycled Water Program.

West Yost worked with Cal Water’s Chico District to develop a recommendation on what role recycled water could play in Cal Water’s future water supply, identify the ultimate size of Cal Water’s Urban Reuse Project, and develop a phased approach to project implementation.

West Yost conducted a study to estimate the potential for urban recycled water use to expand the Town’s existing recycled water system and offset potable water use for non-potable water demands. The project included a market assessment (demand analysis), a facilities alternatives analysis, a construction financing plan, and a California Environmental Quality Act fatal flaw analysis, followed by preparation of the study report in compliance with grant guidelines.

The comprehensive Wastewater Treatment and Biosolids Facilities Master Plan identifies District’s major treatment plant improvements needed through the 2035 planning horizon. As a part of this effort, West Yost has identified the layout and costs of the treatment facilities required for a 3.0 mgd and 9.0 mgd direct and/or indirect potable reuse project.

West Yost assisted the City with their development of using treated wastewater for agricultural irrigation. This effort has been in response to increasingly stringent discharge requirements imposed by the Department of Environmental Quality (DEQ) for discharge of effluent to the Rogue River. West Yost developed the facilities plan which recommended that the City further evaluate reclaimed water production to reduce the impact of pending Total Maximum Daily Loads (TMDLs) on the Rogue River.

West Yost designed a major expansion to the City’s effluent reuse program. A three-mile-long force main was designed to deliver water to a newly purchased 215 acre reuse site. A new reclaimed water pump station was designed as part of the treatment plant design. The pipeline included a crossing of Camas Swale Creek for which an Army Corps of Engineers 404 permit and a State Lands Division permit were obtained.

West Yost is assisting the City in the development of the best compliance solution for several outstanding regulatory issues associated with their 0.5 mgd Wastewater Treatment Facility (WWTF), including an evaluation of the City’s water reuse options.

West Yost has provided services to the City related to the assessment of the existing agricultural areas used for irrigation reuse during the summer months when the Galt Wastewater Treatment Plant (WWTP) is not discharging to the creek.

West Yost has been providing wastewater treatment and disposal system planning and regulatory compliance services for the City’s White Slough Water Pollution Control Facility (WPCF) since the late 1990s. This work has included several planning and regulatory studies related to the current and future requirements for surface water discharge, biosolids land application, and recycled water use on agricultural properties surrounding the WPCF and an adjacent power plant.

West Yost was originally retained by the City to perform facilities planning, design, and construction services for a major expansion and upgrade to the City’s Water Pollution Control Plant (WPCP). West Yost also provided a number of services to the City in evaluating various reuse opportunities on areas surrounding the WPCP.

West Yost has assisted the City in planning its water system for over 20 years, including development of their original Water Master Plan, creating and updating the City’s water system model, and developing an integrated water supply plan. West Yost is currently assisting the City in preparing a Citywide Water System Master Plan which will encompass the City’s potable water and recycled water systems.